fix linting errors

.eslintrc.js

@@ -21,6 +21,14 @@ module.exports = {
     'no-use-before-define': ['error', { functions: false }],
     '@typescript-eslint/no-use-before-define': ['error', { functions: false }],
     'import/prefer-default-export': 'off',
+    'import/extensions': [
+      'error',
+      'always',
+      {
+        js: 'ignorePackages',
+        ts: 'never',
+      },
+    ],
   },
   settings: {
     'import/resolver': {

index.js

@@ -1,5 +1,5 @@
 #! /usr/bin/env node
-/* eslint-disable @typescript-eslint/no-var-requires */
+/* eslint-disable @typescript-eslint/no-var-requires, import/no-unresolved */
 
 const yargs = require('yargs');
 const wetty = require('./dist').default;